MDF & Plywood Shelving - Stress Analysis 2

[aschnerch]

Hello, I was wondering if someone here could help me out.

I'm looking to analyze MDF and plywood shelving spanning the load beams in our warehouse racking. I can calculate the simply supported case (two edges supported). However, I was wondering if someone can advise me how to calculate a scenario of 4 sides being supported (i.e. cross braces added between the load beams). Basically, I need to figure out what interval we need to place these cross braces at.

If anyone has information on the E modulus, poisson ratio, etc. of both MDF and plywood I'd appreciate if you could post it here.

Thanks in advance.

 

[boo1]

The cross braces add lateral stability, bearing support, and close the diaphragm at the end of the plywood panels.
The spacing is dependent on the span, plywood thickness, and loadig. for the physical prop:
See ANSI/A208.2 (2002), Standard for Medium Density Fiberboard. Depending on species and binders (interior or exterior glues),

http://www.fpl.fs.fed.us/documnts/FPLGTR/fplgtr113/Ch10.pdf

http://www.apawood.org/level_c.cfm?content=pub_ply_libmain